Lim Su-Geun, Yi Junkoo, Ha Jaejung, Park Jinyeon, Kwon Woo-Sung, Yu Daejung, Ryoo Zaeyoung, Kim Daehyun
School of Life Sciences, Institute of Life Science and Biotechnology, Kyungpook National University, Daegu 41566, Korea.
School of Animal Life Convergence Science, Hankyong National University, Ansung 17579, Korea.
J Anim Sci Technol. 2024 Nov;66(6):1127-1136. doi: 10.5187/jast.2024.e31. Epub 2024 Nov 30.
The size and location of the corpus luteum and the presence of coexistent follicles are crucial factors in synchronizing recipients and determining the suitability for embryo transfer. However, there has been a recent decline in conception rates after embryo transfer, which is attributed to environmental pollution, uterine inflammation, ovarian cysts, and other factors. Therefore, we conducted experiments to establish a novel criterion for successful embryo transfer assessment. To assess the suitability for embryo transfer one day before transfer, we conducted ultrasound examinations equipped with a vaginal probe to evaluate the corpus luteum and coexistent follicle. We found that instances with corpus luteum and coexistent follicles (diameter: > 10 mm) constituted the majority (69.7%) of cases. When comparing the fertility rates of cases in which the corpus luteum and coexistent follicle (diameter: > 10 mm) were located on the same ovary and cases in which they were not, higher fertility rates were observed when the corpus luteum and coexistent follicle (diameter: > 10 mm) were on different ovaries. Our study revealed a high incidence of corpus luteum and coexistent follicles with a diameter exceeding 10 mm. Therefore, our findings suggest that the co-occurrence of the corpus luteum and a large follicle can serve as a new standard for the evaluation of embryo transfer suitability.
黄体的大小和位置以及共存卵泡的存在是使受体同步化和确定胚胎移植适用性的关键因素。然而，最近胚胎移植后的受孕率有所下降，这归因于环境污染、子宫炎症、卵巢囊肿和其他因素。因此，我们进行了实验以建立一种用于成功胚胎移植评估的新标准。为了在移植前一天评估胚胎移植的适用性，我们使用配备阴道探头的超声检查来评估黄体和共存卵泡。我们发现黄体和共存卵泡（直径：>10mm）的情况占大多数（69.7%）。当比较黄体和共存卵泡（直径：>10mm）位于同一卵巢的病例与它们不在同一卵巢的病例的生育率时，发现当黄体和共存卵泡（直径：>10mm）位于不同卵巢时生育率更高。我们的研究揭示了直径超过10mm的黄体和共存卵泡的高发生率。因此，我们的研究结果表明，黄体和大卵泡的同时出现可作为评估胚胎移植适用性的新标准。
